Software-Controlled Switches (SoftConfig)
2-10
ADSP-CM403F EZ-KIT Lite Evaluation System Manual
Table 2-3. Output Signals of Microchip GPIO Expander
(U27 Port A)
Bit Signal Name
Description
FET Processor Signal
(if applicable)
Component
Connected
Default
0
Not used
Low
1
PB_10_J7_EN
Processor pin
PB_10
connection to expan-
sion connector
J7
U8
PB_10/SINC0_CLK0/
SPI0_D2/CAN1_RX/
SMC0_AWE/TM0_ACI1
Low
2
PB_11_J7_EN
Processor pin
PB_11
connection to expan-
sion connector
J7
U9
PB_11/SINC0_D0/
SPI0_D3/CAN1_TX/
SMC0_AMS0/TM0_ACLK1
Low
3
UART0RTS_EN
UART0 RTS
connected to RS-232
transceiver
U10
PB_04/PWM2_SYNC/
UART0_RTS
/SPT0_
ATDV/SMC0_D12/CNT1_
UD
U23
Low
4
UART0RX_EN
UART0 RX
connected to RS-232
transceiver
U11
PC_01/
UART0_RX
/
SMC0_A05/TM0_ACI5
U23
Low
5
UART0CTS_EN
UART0 CTS
disconnected from
RS-232 transceiver
by default
U12
PB_05/PWM2_TRIP0/
UART0_CTS
/TM0_TMR7/
SMC0_D13/CNT1_DG
U36
High
6
UART0CTS_RTS_LPBK
UART0 CTS and
RTS not connected.
Change to low for
looping back RS-232
CTS and RTS signals
U13
U36
High
7
UART0CTS_RST_EN
UART0 CTS signal
not connected to
input of reset IC
U14
U36
High